Have a 91 Lexus ls400 with a blank screen and want to replace it with the 93. I need the complete wiring diagrams for both to see if I can rewire the 93 into my 91.
I believe that they are interchangeable up until 1997.
SOURCE: R & R 1991 Lexus Ls400 Gear shift knob
slide the lower part of shifter handle down and you will find two screws, but there is 2 wires coming in from center console for overdrive button.you have to remove the center console cover and remove the 2 wires from connector and then pull up threw handle.when you go back together you will have to guide them back threw the handle.
SOURCE: 1993 Lexus LS400 acceleration stalls or surges
I HAD THE SAME PROBLEM WITH MY CAR. 93 LS 400. THAT WOULD BE YOUR FUEL FILTER OR THE FUEL PUMP GOING BAD. TRY CHANGING THE FILTER FIRST. THE DEALER TRIED TO CHARGE ME $980 TO CHANGE FUEL PUMP.
SOURCE: Replace/fix starter on 1991 Lexus LS400
Not too bad. Not much room, just enough to drop the starter. It is probably easier to go up through exhaust if you can get your exhaust shield off the manifold .
SOURCE: LOOKING FOR WIRING DIAGRAM FOR STOCK HEADUNIT
Radio Constant 12V+ Wire: White/Green
Radio Switched 12V+ Wire: Yellow/Red
Radio Ground Wire: Black
Radio Illumination Wire: Red/Black
Radio Dimmer Wire: n/a
Radio Antenna Trigger Wire: Yellow/Green
Left Front Speaker Wire (+): Green/Black
Left Front Speaker Wire (-): Light Green
Right Front Speaker Wire (+): Green/Yellow
Right Front Speaker Wire (-): Gray/Red
Left Rear Speaker Wire (+): Blue/White
Left Rear Speaker Wire (-): Blue/Black
Right Rear Speaker Wire (+): Pink
Right Rear Speaker Wire (-): Blue/Yellow
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